Extendscript/Framemaker Compatibility

ESTK is no longer maintained by Adobe as all scripting support has moved to the ExtendScript Extension for Visual Studio Code. I have tried this package and it does work OK, but I do miss a couple of functions from ESTK. But there is nothing we can do about it. It is a little anoying that some features in JSX that work in ESTK need to be changed to work in the Javascript support of Visual Studio Code. Some things, like include files, have been implemented in a crappy way in VS Code. But again, there is nothing we can hope to do about this as the product is created by Microsoft and the community of scripters for FrameMaker is almost infinitely small comapred to their main user base.
So, you can forget about newer versions of ESTK - there will not be new versions. If you want to keep using ESTK the version you have is what you will have to work with.